To develop an automatic classification and diagnostic system for the leukocyte from bone marrow smears,the technique based on fractal theory is proposed for the extraction of different leukocyte.

• 为了开发骨髓细胞涂片中白细胞的自动分类及计算机辅助诊断系统,基于分形理论提取了不同类型白细胞的分形维数。